1 files changed, 84 insertions, 0 deletions
diff --git a/src/libstrongswan/plugins/nonce/nonce_nonceg.c b/src/libstrongswan/plugins/nonce/nonce_nonceg.c
new file mode 100644
index 000000000..0402e3574
--- /dev/null
+++ b/src/libstrongswan/plugins/nonce/nonce_nonceg.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2012 Adrian-Ken Rueegsegger
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "nonce_nonceg.h"
+
+#include <debug.h>
+
+typedef struct private_nonce_nonceg_t private_nonce_nonceg_t;
+
+/**
+ * Private data of a nonce_nonceg_t object.
+ */
+struct private_nonce_nonceg_t {
+
+	/**
+	 * Public nonce_nonceg_t interface.
+	 */
+	nonce_nonceg_t public;
+
+	/**
+	 * Random number generator
+	 */
+	rng_t* rng;
+};
+
+METHOD(nonce_gen_t, get_nonce, bool,
+	private_nonce_nonceg_t *this, size_t size, u_int8_t *buffer)
+{
+	return this->rng->get_bytes(this->rng, size, buffer);
+}
+
+METHOD(nonce_gen_t, allocate_nonce, bool,
+	private_nonce_nonceg_t *this, size_t size, chunk_t *chunk)
+{
+	return this->rng->allocate_bytes(this->rng, size, chunk);
+}
+
+METHOD(nonce_gen_t, destroy, void,
+	private_nonce_nonceg_t *this)
+{
+	DESTROY_IF(this->rng);
+	free(this);
+}
+
+/*
+ * Described in header.
+ */
+nonce_nonceg_t *nonce_nonceg_create()
+{
+	private_nonce_nonceg_t *this;
+
+	INIT(this,
+		.public = {
+			.nonce_gen = {
+				.get_nonce = _get_nonce,
+				.allocate_nonce = _allocate_nonce,
+				.destroy = _destroy,
+			},
+		},
+	);
+
+	this->rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
+	if (!this->rng)
+	{
+		DBG1(DBG_LIB, "no RNG found for quality %N", rng_quality_names,
+			 RNG_WEAK);
+		destroy(this);
+		return NULL;
+	}
+
+	return &this->public;
+}